body,html
  line-height: 1
  font-weight: 200
  font-family: 'PingFang SC','STHeitiSC-Light','Helvetical-Light',Arial,SansSerif

.clearfix
  display: inline-block
  &:after
    display: block
    content: " "
    height: 0
    line-height: 0
    clear: both
    visibility: hidden

@media (-webkit-min-device-pixel-ratio: 1.5 ),(min-device-pixel-ratio: 1.5 )
  .border-1px
    &::after
      -webkit-transform: scaleY(0.7)
      transform: scaleY(0.7)

@media (-webkit-min-device-pixel-ratio: 2 ),(min-device-pixel-ratio: 2 )
  .border-1px
    &::after
      -webkit-transform: scaleY(0.5)
      transform: scaleY(0.5)
